Mechanism for severing fabrics.



Patented June 6, 1916.

W. W. BEWSIC.

MECHANISM FOR SEVERING FABRICS. APPUCATION FILED SEPT-291 1913.

UNITED STATES PATENT OFFICE.

H WHILIAM W. IBE'WSIC, F RED BANK, NEW JERSEY.-

MECHANISM FOR SEVERING FABRICS.

To all whom it may concern;

' Be it known that I, WILLIAM W. BEWSIG, a citizen of the United States, residing at Red Bank, in the county of Monmouth and State of ,New Jersey, have invented certain new and useful Improvements in Mechanism for Sew-ering Fabrics, of .which the following is a specification. i

This invention relates generally to fabric severing machines and particularlyto that type of such devices utilized in severing portions of tape. H

More specifically the invention relates to a machine comprising a, pair of rotary mem bers one carrylng a platen or anviland the other-a severing tool orv crushing member which is arranged to 'c'otiperate with the platen oranviland crush the fibers at the point of severing, together with suitable driving the rotary mem ers. The invention may be further briefly summarized as consisting in the construction and combination of parts hereinafter set forth in the following description, drawings and claims. 1

Referrin to-the drawings, Figure 1 is a side elevat1on of the machine; Fi 2 is a sectional view through the center 0 the ma- 80 chine, or in other words, a section upon the line 22 of Fig. 3; Fig. 3 is a top plan view of the machine; and Fig. 4 is a section upon the line of Fig. 3.

In carrying out the invention any pre- 85 ferred form and construction of parts may be employed so long "as they possess the necessary characteristics, but Lhave shown one arrangement in the drawings which is,

effective in operation, and in such embodiment 1 represents a suitable base which is rovided with a pair of side frame m'em-- bers 2 spaced apart properly to receive the mechanism. .Each of these side frame members is provided with a vertically disposed slot 3 opening out at the top, and to the rear of this slot is another slot or recess 4 which also opens out at the top. Mounted in the slot 3 and resting on the bottom thereof is a bearing block 5 adapted to receive a trunnion 6 of an anvil or platen roll 7 Each of the blocks 5 is provided with grooves 8, shown in dotted lines in Fig. 4, so that they are guided and held within the slot 3. Each of these blocks is still further provided with an upwardly extending member 9 having a spring shank 10 for receiving the end of a Specification of Letters Patent.

mechanism for feedin --the .tape and for spring 11. These springs engage suitable s Patented June 6, 1916. a "AppHcetionmed-September 29.1918. Serial No. 792,390. i I 1 anks 12 carried by members 13' of bearingv blocks 14 similar inall respects to the blocks 5 andsupporting trunnions 15 of an upper or severing roll 16. The anvil or lower roll 7 is provided with a hardened strip or anvil portion 17 extending longitudinally on-the face or periphery of the anvil roll, and its exterior face forms a portion of the peripheral face of this roll.- This anvil strip is adapted to cooperate with a severing strip 18 mounted in the severing roll 16 and havmg a severing edge 19 for engagement upon the surface of the anvil strip 17. This severing strip is hardened also.

Engaging the upper bearing blocks. 14 are suitable tension screws 20 which are threaded in strips 21 secured to the upper port-ion of the side frame members and s anningthe slots 3. These screws 20 are hel in any adu'sted position by suitable check nuts 22. The strips 21 are held in place by suitable cap screws 23. Mounted upon the projected trunnion of the anvil roll 7 is a spur gear 24, shown in dotted lines in Fig. 2, and

meshing with a gear 25 of like size keyed .to

roller bearing block 27 adapted to receivethe trunnions 28 of the lower feeding roll 29, shown in Fig. 2. This feeding roll has a knurled exterior surface and it cooperates with a feeding roll 30 having a similar surface and provided with trunnions 31 mount ed in a pair of feeding roll bearin blocks 32' also mounted in the slots 4. engage in sockets 34, shown in dotted lines prings 33 in Fig. 4, in the blocks 32, and these springs are backed up by suitable nuts 35 mounted i on screws 36 extending through stri s 37 secured to the upper part of the side rame members "by cap screws 38, or in any other suitable manner. Secured to the side frame members are supporting plate portions 39 and 40, the former projecting in front of the feeding rolls and having a recess for permitting engagement of these rolls. This plate 39, however, stops at a point near the ing with a gear 44 mounted upon the pro- 'rying out the severed articles.

ta e.

The lower feeding roll 29 is driven by means of a gear 43 mounted upon the trunnion 28 of the lower feeding roll, and meshjected trunmon 15 of the severlng roll.

The device is driven by a suitable driving pulley 45 mounted upon the projected end of the trunnion 6. p

In operation, the driving pulley 45 is driven in any suitable manner and the end of the roll of tape is fed in under'the guide to the feeding rolls and from thence between the anvil roll and the severing roll. As the parts rotate, the cutting edge of the severing strip engages the upper face of the fabric and crushes it on the line corresponding to the cutting edge of the severing strip and the anvil. The length of strip may be either regulated by various sizes of anvil and cutting rolls, or the gear between the severing roll and the feeding rolls may be varied to feed the strip either fast or slow, as the case may be, and in that way the length of the strip may be varied. The adjustment of the rolls, that is the anvil roll and the severing roll, is such that the cutting edge of the severing strip just touches the face of the anvil strip so that I the fibers of the tape or material opera-ted upon are crushed on a line, and in that way severed.

Having described my invention, I claim 1. In mechanism for severing fabrics, a frame, an anvil roll supported in the frame and having a hard peripheral surface, a severing roll having a severing edge said severing roll being also mounted in the frame, means for adjusting said rolls with respect to each other so that the severing strip is coincident with the hard surface of the anvil roll but out of contact therewith where by the fibers of the fabric are crushed to the point of severing, and means for driving said rolls.

2. In mechanism for severing fabric, a frame, an anvil roll having a hardened anvil surface on the periphery, a severing roll having a severing member, supporting means arranged in the frame for both of said rolls and permitting relative movement, means for forcing said rolls apart, means for positively adjusting said rolls toward each other until the edge of the severing member is coincident with the surface of the anvil portion of the anvil roll but out of contact therewith whereby all the fibers of the fabric are crushed to the point of severing, and means for driving said rolls.

3; In mechanism for severing fabric, a frame, an anvil roll, a hardened anvil strip in the periphery of saidroll and forming therewith an uninterrupted peripheral surface, a severing roll, a hardened severing strip arranged in said severing roll, suitable gearing between said rolls for causing the severing strip to always register with the anvil strip, supporting means for said rolls arranged in the frame and permitting relative movement, springs for forcing said rolls apart, and adjusting nuts and screws for forcing said rolls toward each other against said springs until the edge of the severing strip is coincident with the periphery of the anvil strip but out of contact therewith, thereby producing a severing means without the abutment of the severing strip against the anvil strip.

In testimony whereof I aflix my signature in presence of two witnesses.

WILLIAM W. BEWSIC.

Witnesses:

FRANK LEE, EDwD W. WISE. 

